<template>
	<view :class="{'uni-load-more':(status==='no-data'?false:true)}" style="clear: both;">
		<view class="uni-load-more__img" v-show="status === 'loading' && contentText.contentrefresh!='' && showIcon">
			<view class="load1">
				<view :style="{background:color}"></view>
				<view :style="{background:color}"></view>
				<view :style="{background:color}"></view>
				<view :style="{background:color}"></view>
			</view>
			<view class="load2">
				<view :style="{background:color}"></view>
				<view :style="{background:color}"></view>
				<view :style="{background:color}"></view>
				<view :style="{background:color}"></view>
			</view>
			<view class="load3">
				<view :style="{background:color}"></view>
				<view :style="{background:color}"></view>
				<view :style="{background:color}"></view>
				<view :style="{background:color}"></view>
			</view>
		</view>
		<text v-if="status=='more'" class="uni-load-more__text" :style="{color:color}">{{contentText.contentdown}}</text>
		<text v-if="status=='loading'" class="uni-load-more__text" :style="{color:color}">{{contentText.contentrefresh}}</text>
		<text v-if="status=='no-more'" class="uni-load-more__text" :style="{color:color}">{{contentText.contentnomore}}</text>
		<view v-if="status=='error'" class="uni-load-more__text" :style="{color:'red'}">
		   {{contentText.contenterror}}
		   <text class="uni-load-btn" @click="loadData()">重新加载</text>
		</view>
		<view v-if="status=='no-data'">
			<view class="uni-load-more__nodata">
				<image src="../../static/empty.png" style="height:240upx;" mode="heightFix"></image>
			    <view style="padding-top: 10px;color:#999999;">{{search ? contentText.contentsearch : contentText.contentnodata}}</view>
			</view>
		</view>
		<!-- <text class="uni-load-more__text" :style="{color:color}">{{status === 'more' ? contentText.contentdown : (status === 'loading' ? contentText.contentrefresh : contentText.contentnomore)}}</text> -->
	</view>
</template>

<script>
	import uniIcon from '../uni-icon/uni-icon.vue'
	export default {
		name: "uni-load-more",
		components: { uniIcon },
		props: {
			status: {
				//上拉的状态：no-data没有数据 more-加载前；loading-加载中；no-more-没有更多了,error-加载错误重新加载
				type: String,
				default: 'more'
			},
			showIcon: {
				type: Boolean,
				default: true
			},
			search: {
				type: Boolean,
				default: false
			},
			color: {
				type: String,
				default: "#999999"
			},
			contentText: {
				type: Object,
				default () {
					return {
						contentdown: "上拉显示更多",
						contentrefresh: "正在加载数据...",
						contentnomore: "没有更多了",
						contentnodata: "没有新消息了哦",
						contenterror: "加载数据异常"
					};
				}
			}
		},
		data() {
			return {}
		},
		methods:{
			loadData(e) {
				this.$emit('loadData',{});
			},
		}
	}
</script>

<style>
	@charset "UTF-8";
	.uni-load-btn{
		color: #000;
        background-color: #f8f8f8;
		border-radius: 5px;
		padding: 8px 10px;
		line-height: 1;
		margin-left: 10px;
		position: relative;
	}
	.uni-load-btn:after {
		content: " ";
		width: 200%;
		height: 200%;
		position: absolute;
		top: 0;
		left: 0;
		border: 1px solid rgba(0,0,0,.2);
		-webkit-transform: scale(.5);
		transform: scale(.5);
		-webkit-transform-origin: 0 0;
		transform-origin: 0 0;
		box-sizing: border-box;
		border-radius: 10px;
	}
    .uni-load-more__nodata{
		border-radius: 10px;
		width: 100%;
		padding-top: 55px;
		padding-bottom: 55px;
		text-align: center;
	}
	.uni-load-more {
		display: flex;
		flex-direction: row;
		height: 80upx;
		align-items: center;
		justify-content: center
	}

	.uni-load-more__text {
		font-size: 28upx;
		color: #999
	}

	.uni-load-more__img {
		height: 24px;
		width: 24px;
		margin-right: 10px
	}

	.uni-load-more__img>view {
		position: absolute
	}

	.uni-load-more__img>view view {
		width: 6px;
		height: 2px;
		border-top-left-radius: 1px;
		border-bottom-left-radius: 1px;
		background: #999;
		position: absolute;
		opacity: .2;
		transform-origin: 50%;
		animation: load 1.56s ease infinite
	}

	.uni-load-more__img>view view:nth-child(1) {
		transform: rotate(90deg);
		top: 2px;
		left: 9px
	}

	.uni-load-more__img>view view:nth-child(2) {
		transform: rotate(180deg);
		top: 11px;
		right: 0
	}

	.uni-load-more__img>view view:nth-child(3) {
		transform: rotate(270deg);
		bottom: 2px;
		left: 9px
	}

	.uni-load-more__img>view view:nth-child(4) {
		top: 11px;
		left: 0
	}

	.load1,
	.load2,
	.load3 {
		height: 24px;
		width: 24px
	}

	.load2 {
		transform: rotate(30deg)
	}

	.load3 {
		transform: rotate(60deg)
	}

	.load1 view:nth-child(1) {
		animation-delay: 0s
	}

	.load2 view:nth-child(1) {
		animation-delay: .13s
	}

	.load3 view:nth-child(1) {
		animation-delay: .26s
	}

	.load1 view:nth-child(2) {
		animation-delay: .39s
	}

	.load2 view:nth-child(2) {
		animation-delay: .52s
	}

	.load3 view:nth-child(2) {
		animation-delay: .65s
	}

	.load1 view:nth-child(3) {
		animation-delay: .78s
	}

	.load2 view:nth-child(3) {
		animation-delay: .91s
	}

	.load3 view:nth-child(3) {
		animation-delay: 1.04s
	}

	.load1 view:nth-child(4) {
		animation-delay: 1.17s
	}

	.load2 view:nth-child(4) {
		animation-delay: 1.3s
	}

	.load3 view:nth-child(4) {
		animation-delay: 1.43s
	}

	@-webkit-keyframes load {
		0% {
			opacity: 1
		}

		100% {
			opacity: .2
		}
	}
</style>